A day after giving birth to her son Memphis, Jason Aldean's wife Brittany is doting over her baby boy on social media.

The country superstar and the former Brittany Kerr welcomed Memphis Aldean Williams on Friday (Dec. 1) at 1:29PM. He weighed 9 lbs., 5 oz., and the overjoyed couple turned to Instagram to share a photo of Memphis cradled in his mother's arms, with her calling it "hands down the happiest day of my life."

That photo did not reveal the amazingly full head of hair that Memphis was born with. Brittany posted to Instagram again on Saturday (Dec. 2), this time with her adorable son's head not wrapped up, giving fans their first look at Memphis' thick head of dark hair.

"My world," she writes to accompany the photo, also posting a heart icon.

Coutry Music Babies Born in 2017

Aldean also turned to IG to share his joy late Friday, writing, "So blessed today to see my little man come into the world. In a year that has been a rollercoaster ride, this is what it's all about. I can't wait to see what life has in store for this kid."

Aldean married Brittany on March 21, 2015, on the beach in Mexico. The couple revealed her pregnancy in May of 2017, and announced they were expecting a boy via social media a few weeks later. They revealed his name when they shared shots of his nursery online in September.

Memphis is Brittany's first child, and Aldean's first son. He also has two daughters from his first marriage. He says he is looking forward to doing guy things with Memphis when he gets older: "Hunt, fish, playing baseball in the yard and all that kind of stuff, I’m looking forward to all of it," the singer tells Taste of Country.